Internal-combustion engine



A. J. ROWLEDGE. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED NOV. 19. 19H.

Patented Aug 8, 11922 3 SI'IEETS-SHEET I F -fi I LIT/ 42k V wmm A. J.ROWLEDGE. INTERNAL COMBUSTION ENGiNE. APPLICATION FILED NOV. 19, 1917.

l gg5 57 Patented Aug. 8, 119221 I i 3 SHEETS-SHEET 2.

A. 1. ROWLEDGE. INTERNAL COMBUSTION ENGINE. APPLICATION FILED NOV; 19,I91?- 3 SHEETSSHEET 3.

1 $52,5 5? Patented Aug. 8 I922;

UNHTE stares Patent ensues.

ARTHUR JOHN ROWLEDGE, 01E LONDON, ENGLAND, ASSIGNOR TOD. NAPIER z SON,

LIMITED, OF LONDON, ENGLAND.

- INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent. Paflggntgqfl A g, $9 1922 Applicationfiled November 19, 1917. ,Serial No. 202,795.

To all whom it may concern:

Be it known that I, ARTHUR JOHN Row- LEDGE, subject of the King ofEngland, residing at London, in England, have invented certain new anduseful Improvements in Internal-Combustion Engines, of which thefollowing is a specification.

This invention relates to internal combustion engines of the typecomprising three sets'or blocks of cylinders arranged so that the axesof the cylinders are disposed in three planes relatively inclined aboutthe crank shaft axis and each block of cylinders having one or a pair ofcam shafts mounted on the cylinder heads for operating the valves, andhas for its object to effect certain improvements in the method ofdriving these cam shafts off the crank shaft and also of driving one ormore magnetos and the necessary water and oil pumps which is embodied inthe present ap'p'licants concurrent application for United StatesLetters Patent Serial No. 196,710 filed October The invention will befully disclosed in the following description when taken in connectionwith the accompanying drawings in which:

Figure 1 is an end elevation partly in vertical section on the line 1 -1in Figure 3 looking in the dlrection of the arrows and illustrates oneconstruction of internal combustion engine of the type indicated havingthe present improvements applied thereto.

certain parts being omitted for the sakeof clearness.

Like letters indicate like parts throughout the drawings. I

The three sets or blocks of cylinders A, B

and C are arranged so that the axes of these cylinders are disposed inthree planes relatively inclined about the axis of the crank shaft D theangle between,the'block of cylinders A and the block ofcylinders B beingequal to the angle between the block of cylinders A and the block ofcylinders C. On the head 'of each block of cylinders are mounted two camshafts A A B ]B and C C these cam shafts serving to operate the twinsets of valves with'which each cylinder in each block is provided. Thesecam shafts are geared together by spur gearing so that they rotate inopposite directions and on the end of one of the cam shafts A B C is abevel wheel'A B C which gears with a corresponding bevel wheel E E Emounted on what may be termedthe 'outer end of an intermediate shaft.These three intermediate shafts are similarly constructed and each isdivided at some point in its length into two parts connected by adetachable coupling which will be more particularly described hereafter.In Figure 1 the detail construction of the central intermediate shaftonly is'shown in section the two portions of this shaft being designatedG and G. 0f the lateral intermediate shafts H and J only a portion ofthe end of each shaft appears in Figure l the figure showing inelevation the casings K within which these shafts are enclosed.

All the three intermediate shafts G H and J are disposed truly radialwith relation to. the axis of the crank shaft D. On the end ofthelateral intermediate shaft H is a bevel wheel H and on the end of theintermediate shaft J is a bevel wheel J both these bevel wheels gearingwith a bevel wheel D mounted on the crank shaft D or on an extension orprolongation therethe crankshaft is somewhat prolonged or provided withan extension as shown in Figure 3 and carries in addition to the bevelwheel D a second bevel wheel D by means of which two magnetos are drivenas shown in Figure 2. These two magnetos L are disposed on oppositesides of the crank shaft D and are driven through bevel wheels L gearingwith the bevel wheels D Theoil and water pumps are driven off the samebevel wheel D which serves to drive three intermediate shafts (3;, H andJ.

Mitt

A shOIt vertical shaft M with a bevel wheel bevel wheel D is disposedradially with relation to the crank shaft axis and opposite to but nottruly in line with the central intermediate shaft G as shown in Figures1 and 3. The water pump N is of suitable type and construction and ismountedon or driven either directly or indirectly by or through theshaft M. At some suitable point in the length of the pump shaft M ismounted a skew pinion M or a worm which gears with two correspondingwheels 0 each of which is fixed on a shaft 0 which lies at right anglesto the pump shaft M and parallel to the axis of the crank shaft B. -Eachof these shafts 0 drives two coaxially mounted oil pumps I P Q arrangedwise the drive being taken off the crank shaft from the bevel Wheel Dwhich serves to drive the three intermediate shafts .G, H and J;

One of the oil umps P in each pair' serves to deal with t e oil whichdrains into a sump. suitably disposed below, the suction pipes P fromthis sump being shown in Figure 2. These two pumps P deliver through apipe P to the oil tank. The other pump Q on each oil pump shaft 0 servesto supply oil to the engine this oil being drawn from the tank throu h alateral connect-ion Q (Figure 2) an delivering upwards. The. deliveryfrom one of these supply pumps Q, leads as at Q (Figure 3) into one endof the hollow crank shaft D which is carried out to a point over oradjacent to the oil pumps, A second delivery QF (Figure 2) from thesupply pump Q, leads to the opposite end of the crank shaft. The othersupply pump Q, de:

livers through a connection 4 to the cam shafts on the heads of thecylinders.

The coupling em loyed for the purpose of connecting the a utting ends ofthe two parts of each intermediate shaft, such as the two parts G G ofthe central intermediate shaft, may conveniently be constructed .in thefollowing manner and as illus trated in Figure 1. Though as there shown,

in connection with the central shaft G G it is to be understood that asimilar device may be employed for-coupling the two portions comprisingeach lateral intermediate shaft H and J The two abutting l ends of theshaft lengths G. and G are somewhat thickened and in each thickened partare formed one or more longitudinal keyways G G. In

each of these key-ways lies a corresponding key or feather S carried bya sleeve S which surrounds the joint. The key-Ways,

G extend to a greater distance along the.

are wholly clear of the abutting ends of.

'the shaft lengths G and G. When the sleeve S occupies this latterposition itis possible to separate the ends of the shaft lengths G and Gand the outer portion G can be independently. rotated or removed. Tomake the joint the ends of the two portions G G of the shaft are broughttoether and the sleeve S is then slipped over them when the keys S willengage equally the key-ways G and G and thus serve to couple the ends ofthe shaft lengthsso as to transmit the drive. The sleeve S is retainedin place by a bolt or pin S which passes transversely through the sleeveand through the abutting ends of the shaft lengths G and G circularnotches 'being formed in the ends of these shaft lengths to allow of thepassage of'the bolt. Thebolt S externally in a cylindrical guide orbearing S which is in turn .mounted in a boss K which forms part of thecasing enclosing the intermediate shaft. Access can be had to thecouplin by unscrewing a socket or sleeve K whic encloses; thecouplingthis sleeve being then free to be slid along the tubular casingK.

By thus forming each intermediate shaft in two portions connected by adevice such as described or by some other adjustable couplingof a likenature it is possible to set the timing of the cam shafts carried on thecylinder heads after' the parts have been assembled. Thus when thecylinders are in place the shaft length G can be rotated to adjust thetiming of the cam shafts A A before the shaft'length G is coupled to theshaft length G.

The disposition of the parts and details of construction may be modifiedas found desirable and in accordance with the construction of the otherportions of the eng What I claim as m to secure by Letters P atent isj 1. In an internal combustion engine, in

combination; a crank shaft having a bevel wheel fixed thereon, a rotaryoil pump havinvention and desire see said means comprising a short shaftarranged with its axis radial to the axis of said crank shaft and havinga bevel wheel mounted thereon which meshes with the bevel wheel on thecrank shaft, said shaft extending between the pump shafts and beingoperatively connected thereto.

2. In an internal combustion engine the combination-of. three blocks ofcylinders arranged sothat the axes of the cylinders lie in three planesrelatively inclined about the crank shaft axis, a cam shaft mounted onthe head of each block of cylinders, a bevel wheel on one end of eachcam shaft, a crank shaft, a bevel wheel towards one end of the crankshaft and driventhereby, a second bevel wheel adjacent to the firstbevel wheel and similarly driven by the crank shaft, three intermediateshafts through which the cam shafts are driven from the crankshaft allthese three shafts lying truly radial with relation to the crank shaftaxis, a bevel wheel on the outer end of each intermediate shaft gearingwith the bevel wheel on the end of the corresponding cam shaft, a bevelwheel on the inner end of each lateral inter- .mediate.shaft these twobevel wheels gearand two magnetos each havin on its shaft a bevel wheelwhich gears with the second bevel wheel on the crank shaft as set forth.

3. In an internal combustion enginethe combination of three blocks, ofcylinders arranged so that the axes of the cylinders lie in three planesrelatively inclined about the the head of each block of cylinders, abevel wheel on one end of each camshaft, a crank shaft, abevel wheeltowards one end of the crank shaft and driven thereby, threeintermediate shafts through which the cam shafts are'driven from thecrank shaft all these three shafts lying truly radial with relationtothe crank shaft axis, a bevel wheel on the outer endof each intermediateshaft gearing with the bevel wheel on the end of the corresponding camshaft, a bevel wheel on the inner end of each lateral intermediate shaftthese two bevel wheels earing with the bevel wheel on the crank s aft, asecond bevel wheel dn one of the lateral intermediate shafts andpositioned near its inner end, a bevel wheel on the inner end of thecentral intermediate shaft this bevel 4. In an internal combustionenginethe combination of three blocks of cylinders arranged so that theaxes of the cylinders lie in three planes relatively inclined about thecrank shaft axis, a cam shaft mounted on the head of each block ofcylinders, a bevel wheel on ohe end of each cam shaft, a crank shaft, a,bevel wheel towards one end of the. crank shaft and driven thereby, asecond bevel wheel adjacent to the first bevel wheel and similarlydriven by the crank shaft, three intermediate shafts through which-thecam shafts are driven from the crank shaft all these three shafts lyintruly radial with relation to the crank s aft axis, a bevel wheel on theouter end of each intermediate shaft gearing with the bevel wheel on theend of the corresponding cam shaft, a bevel wheel on the inner end ofeach lateral intermediate shaft these two'bevel wheels gearing with thefirst bevel wheel on the crank shaft, a second bevel wheel on one of thelateral intermediateshafts and positioned near its inner end, a bevelwheel on the inner end of the central intermediate shaft this bevelwheel gearing with the second bevel wheel on the lateral intermediate Qshaft, two magnetos each having on its shaft a bevel wheel which gearswith the second bevel wheel on the crank shaft, oil and water pumps, andmeans for driving these pumps off the first bevel wheel on the crankshaft as set forth. I

5. In an internal combustion engine the" combination of three blocks ofcylinders arranged so that the axes of the cylinders lie in three planesrelatively inclined about the crank shaft axis, two cam shafts mountedon the head of each blockof cylinders", gearing between the two camsh'afts on each block of cylinders, a bevel wheel on one crank shaftaxis, a. cam shaft mounted on end of one of the cam shafts in each pair,a crank shaft, a bevel wheel towards one. end of the, crank shaft anddriven thereby, a second bevel wheel adjacent to the first bevel wheeland similarly driven by the I crank shaft, three intermediate shaftsthrough which the cam shafts are driven from the crank shaft all 'thesethree shafts i lying truly radial with relation to the crank shaft axis,a bevel wheel on the outer end of each intermediate shaft gearing with.the bevel wheel on the end of the corresponding cam shaft, a bevel wheelon the inner end of each lateral intermediate shaft these two bevelwheels gearing with the first bevel wheel on the crank shaft, a secondbevel' wheel on one of the lateral intermediate shafts and positionednear its inner end, a

bevel wheel on the inner end of the central intermediate shaft thisbevel wheel gearing with the second bevel wheel on the lateralintermediate shaft, two magnetos each having on its shaft a bevel wheelwhich gears with the second bevel wheel on the crank shaft, oil andwater pumps, and means for driving these pumps off the first bevel wheelon the crank shaft as set forth.

6. In an internal combustion engine the combination of three blocks ofcylinders arranged so that the axes of the cylinders lie in three planesrelatively inclined about the crank shaft axis, a cam shaft mounted onthe head of each block of cylinders, a bevel wheel on one end of eachcam shaft, a crank shaft, a bevel wheel towards one end of the crankshaft and driven thereby, three intermediate shafts through which thecam shafts are driven from the crank shaft all these threeshafts-lyingtruly radial with relation to the crank shaft axis, a bevelwheel on the outer end of each intermediate shaft gearing with the bevelwheel on the end of the corresponding cam shaft, a bevel wheel on theinner end of each lateral intermediate shaft these two bevel wheelsgearing with the bevel wheel on the crank shaft, a second bevel wheel onone of the lateral intermediate shafts and positioned near its innerend, a bevel wheel on the.

inner end of the central intermediate shaft bevel wheelon the lateralintermediate shaft, a water pump with its shaft disposed at right anglesto the crank shaft axis, a bevel wheel on the end of the water A pumpshaft gearing with the bevel wheel on "the crank shaft, oil pumps, andmeans for driving the oil pumps off .the water pump shaft as set forth.

7 7. In an internal combustion engine the combination of three blocks ofcylinders arranged so that the axes of the cylinders lie in three planesrelatively inclined about the crank shaft axis, a cam shaft mounted onthe head of each block 'of cylinders, a bevel wheel on one end of eachcam shaft, ,a crank shaft, a bevel wheel towards one end of the crankshaft and driven thereby,

three intermediate'shaffts through which the cam shafts are driven fromthe crank shaft all these three shafts lying truly radial with relationto the crank shaft axis, a bevel wheel on the outer end of, eachintermediate shaft gearing with thelbevel wheel on'the end of thecorresponding cam shaft, -a bevel wheel on the inner end of eachlateralintermediate shaft these two bevel" wheels gearing with the bevel wheelon the crank shaft, a second bevel wheel on one of the lateralintermediate shafts and positioned near its inner end, a bevel wheel onthe inner end of the central intermediate shaft this bevel wheel gearingwith the .65 second bevel wheel on the lateral interrazapsv mediateshaft, a water pump with its shaft disposed at right angles to the crankshaft axis, a bevel Wheel on the end of the water pump shaft gearingwith the bevel wheel on the crank shaft, two sets of oil pumps on twoshafts disposed parallel to the crank shaft axis, and gearing betweenthe two oil pump shafts and the water pumpshaft so that the oil pumpsare driven off the water pump shaft as set forth.

8. In an internal combustion engine the combination of three blocks ofcylinders arranged so that the axes of the cylinders lie in three planesrelatively inclined about the crank shaft axis, a cam shaft mounted onthe head of each block of cylinders, a bevel wheel on one end of eachcamshaft, a crank shaft, a bevel wheel towards one end of the crankshaft and driven thereby, a second bevel wheel adjacent to the first 85bevel wheel, and similarly driven by the crank shaft, three intermediateshafts through which the cam shafts are driven from the crank shaft allthese three shafts lying truly radial with relation to the crank shaftaxis and each of these shafts being divided at some point in its lengthinto two 1 parts the ends of which abut, a detachable coupling for theabutting ends of the two parts of each intermediate shaft, a bevel wheelon the outer endof each intermediate this bevel wheel gearing withthesecond shaft gearing with the bevel wheel on the end of thecorresponding cam shaft, a bevel wheel onthe inner end of each lateralintermediate shaft these two bevel wheels gearing with the first bevelwheel on the crank shaft, a second bevel wheel on one of the lateralintermediate shafts and positioned near its inner end, a bevel wheel onthe inner end of the central intermediate shaft this bevel wheel gearingwith the second bevel wheel on the lateral intermediate shaft, twomagnetos each having on its shaft a bevel wheel which gears with thesecond bevel wheel on the crank shaft, oil and water pumps, and meansfordriving these pumps off the first bevel wheel on the crank shaft asset forth. 9. In an internal combustion engine the combination of threeblocks of cylinders arranged so that the axes of the cylinders lie inthree planes relatively inclined about the crank shaft axis, two camshafts mounted on the head of each'block of cylinders, gearing between"the two cam shafts on each block of cylinders, a b'evel wheel on one endof one of the cam shafts in each pair, a crank shaft, a bevel wheeltowards one end of the crank shaft and driven thereby, a second bevelwheel adjacent to the first bevel wheel and similarly driven by thecrank shaft, three intermediate shafts'through which the cam shafts aredriven from the crank shaft all these three shafts lying truly radialwith relation to the crank shaft axis and each of .these'shafts beingdivided at some point in its length into two parts the ends of whichabut, a detachable coupling for the abutting ends of the two parts ofeach intermediate shaft, a bevel wheel on the outer-end of eachintermediate shaft gearing with the bevel wheel on theend of thecorresponding cam shaft, a bevel wheel on the inner end of each lateralintermediate shaft these two bevel wheels gearing with the firstbevel'wheel on the crank shaft, a second bevel wheel on one of thelateral intermediate shafts and positioned near its inner end, a bevelwheel on the inner end of the central intermediate shaft this bevelwheel gearing with the second bevel wheel on the lateral intermediateshaft, two magnetos oppositely disposed on either side of the crankshaft with their shafts at right angles to the crank shaft axis, a bevelwheel on the end of each mag to the crank shaft axis, and gearingbetween the two oil pump shafts and the water pump shaft so that the oilpumps are driven off the water pump shaft as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ARTHUR JOHN ROWLEDGE.

Witnesses:

ROGER R. BAGGATT, ERNEs'r Risk.

